What the File Splitter Does and Why It Matters
The File Splitter breaks a large file into smaller numbered chunks in your browser, so an oversized file fits within email attachment limits, upload caps, or storage constraints. The original is untouched; you download a set of parts that can later be rejoined.
This matters because many services still cap individual file sizes, and a single big archive or video may be impossible to send or store as one piece. Splitting locally avoids uploading a sensitive file to some online splitter just to work around a size limit.
How to Use File Splitter
- Select the large file you want to split.
- Choose the chunk size (for example a maximum size per part).
- Run the split to generate numbered pieces.
- Download each part; keep them together so they can be rejoined later.
- Use the companion File Merger to reassemble the original.
Supported Inputs and Limitations
What you provide
- A single file from your device
- A chosen maximum size per chunk
What you get
- A set of numbered file parts
- Pieces small enough for your attachment, upload, or storage limit
Known limitations
- The parts are not independently usable — you need all of them, in order, to rebuild the original.
- Rejoining requires a compatible merger such as the NovaTools File Merger.
- Splitting a very large file depends on your device memory.
Privacy and Security
Splitting is performed entirely in your browser. Your file is processed on your device and is never uploaded to NovaTools or any external service, which is exactly why it is safer than online splitters for private data.
Frequently Asked Questions
How do I put the file back together?
Use the File Merger tool and provide all the numbered parts. It rejoins them in order to reconstruct the original file.
Will any single part work on its own?
No. Each part is a fragment; you need the complete set in the correct order to restore the original.
Is my file uploaded to split it?
No. The split happens locally and the file never leaves your browser.